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发明名称
TELEPHONE SETS
摘要
申请公布号
GB8420183(D0)
申请公布日期
1984.09.12
申请号
GB19840020183
申请日期
1984.08.08
申请人
AMERICAN TELEPHONE & TELEGRAPH CO
发明人
分类号
H04M19/04
主分类号
H04M19/04
代理机构
代理人
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